吉林辉南二龙湾玛珥湖12.0ka B.P.以来孢粉记录与气候变化  

Pollen Record and Climate Changing Since 12.0 ka B.P.in Erlongwan Maar Lake,Jilin Province

作　　者：刘玉英[1,2] 刘嘉麒[3] 汉景泰[3] 

机构地区：[1]吉林大学应用技术学院,长春130022 [2]吉林大学地球科学学院,长春130061 [3]中国科学院地质与地球物理研究所,北京100029

出　　处：《吉林大学学报（地球科学版）》2009年第1期93-98,共6页Journal of Jilin University：Earth Science Edition

基　　金：中国科学院知识创新重要方向项目(KZCX3-SW-145)

摘　　要：东北二龙湾玛珥湖孢粉记录显示，12．0kaB．P．以来，该区植被和气候经历了以下变化：11．76～9．81kaB．P．发育针阔叶混交林，气候冷干。9．81～4．11kaB．P．为落叶阔叶林植被景观，前期（9．81～8．86kaB．P．）温干，为增温期；后期（8．86～4．11kaB．P．）暖湿，为气候适宜期。4．11kaB．P．至今，再次发育针阔叶混交林，其中1.62kaB．P．以前，气候温凉；之后湿度下降，气候凉干。研究表明：YD（11．56～10．21kaB．P．）事件在二龙湾玛珥湖孢粉资料中有突出记录，4．0kaB．P．左右开始的降温现象在东北东部地区广泛出现。A vegetation-environment history has been reconstructed according to the pollen characteristics of Erlongwan Maar lake since the last 12.0 ka B. P.. During 11.76 -9. 81 ka B. P. , there is conifer/broad - leaved forest, and climate is cold and dry. Between 9. 81 - 4.11 ka B. P. , the vegetation in this region is broad-leaved forest, which indict tepid and dry climate in first stage （9.81 -8.86 ka B. P. ） and warm, humid climate in late stage（8.86 -4.11 ka B. P. ）. After 4.11 ka B. P. ,there developed coni- fer/ broad - leaved forest again, and climate changed to cool gradually before 1.62 ka B. P.. After this, the climate in this region is changed into more cool and dry. The pollen records of Erlongwan Maar lake shows Younger Dryas event（11. 56 - 10.21 ka B. P. ） and 4.0 ka B. P. climate event stand out in the region.

关 键 词：孢粉记录 古气候 新仙女木事件 二龙湾玛珥湖 

分 类 号：P534.63[天文地球—第四纪地质学]